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Seletividade da Clinoptilolita natural por metais tóxicos em sistemas aquosos.
(Universidade Federal de São Carlos, 2004-12-13)
Natural zeolites are the most important inorganic cationic exchangers exhibiting high
ion exchange capacity, selectivity and environment compatibility.
Heavy metals are well known for toxicity and their disposal is a ...
Formação de mesoporos na síntese de zeólitas ZSM-5 via nanomoldagem avaliação no craqueamento de n-decanoFormação de mesoporos na síntese de zeólitas ZSM-5 via nanomoldagem avaliação no craqueamento de n-decano
(Universidade Federal de São Carlos, 2008-04-04)
The use of zeolites in the cracking of hydrocarbons is limited because the molecules higher than 0.74 nm do not diffuse in their micropores. In the other hand, molecular sieves as MCM-41, MCM-48 ou SBA-15, whose diameters ...
Separação adsortiva de misturas etanol-água por processo PSA.
(Universidade Federal de São Carlos, 2005-03-02)
The ethanol is one of the most well-known and diffused fuels sources in
nowadays, therefore the domain of its technology has a great importance to the producer
countries. Beyond it is in general, lesser expensive than the ...
Sólidos micro-mesoestruturados tipo zeólita ZSM-5/peneira molecular MCM-41 - síntese e estudo de propriedades.
(Universidade Federal de São Carlos, 2006-08-16)
In the transformation of bulky molecules, the necessity of catalysts that allow the diffusion to and from the active sites located in the interior of the porous system has become of higher interest. The restriction for the ...
Nanoesferas de sílica - otimização das condições de síntese e estudo de propriedades.
(Universidade Federal de São Carlos, 2004-04-19)
The restriction in the application of molecular sieves in adsorption or catalytic process involving molecules with diameters higher than 0.8 nm, have lead to the study of solids possessing higher pore size. In that sense, ...
Catalisadores à base de Cu, Co ou Fe trocados ou suportados em zeólita USY avaliação na redução de NO com CO
(Universidade Federal de São Carlos, 2008-04-08)
The emissions of the nitrogen oxides (NOx) must be hardly reduced in the next years. The catalytic reduction of NO with CO is one of the possible processes with potential to be able to transform those oxides in N2. In that ...
Evolução da forma e encolhimento de um sistema gel durante a secagem por convecção forçada.
(Universidade Federal de São Carlos, 2003-09-05)
Knowledge of the shape evolution and shrinkage of a spherical gel system during drying by forced convection significantly enhances the understanding of this process under the vision of the transport phenomena. This work ...
Contribuição à modelagem matemática do reator anaeróbio horizontal do leito fixo (RAHLF) para tratamento de águas residuárias.
(Universidade Federal de São Carlos, 2004-03-05)
This work studied the anaerobic horizontal reactor of fixed bed (RAHLF)for treatment of waste waters, developed in the Department of Hydraulics and Sanitation of the School of Engineering of São Carlos USP by investigating
some ...
Reforma a vapor do etanol sobre catalisadores de Ni e Co suportados.
(Universidade Federal de São Carlos, 2004-08-17)
The Ni and Co catalysts supported on Al2O3 and 12%La-Al2O3 and the carrier 12%La-Al2O3 were prepared by impregnation of the support with an aqueous solution of corresponding nitrates metals. The catalysts were characterized ...
Análise da presença do glicerol no comportamento fluidodinâmico de leitos fluidizados e vibrofluidizado.
(Universidade Federal de São Carlos, 2002-04-18)
Vibrofluidized beds with inert particles are often used for drying pastes in a laboratory scale. Aiming to contribute to the study of paste drying in such beds, the main purpose of this work is to analyze fluid dynamic ...